896 HEPATIC^. 



■3 mm., "6 mm. x 475 mm., seg. "25 mm.; innevmost bracts '75 mm. 

 long X 1* mm. broad, -75 mm. xl'25 mm.; spores "015 mm., 

 •0125 mm.; elaters l' mm. long x -015 mm. broad; perigonial 

 bracts '05 mm. x "5 mm., seg. "1 mm.; antheridia '2 mm. x 

 '15 mm. 



Hab.— Growing in broad sliallow compact patches in alpine 

 situations. Very rare. 



15. Craig Coynacb, near Ben Lavvers, l)r. A. 0. Black ; Ben 

 Lawers, C. J. IJ'i/d, Geor//e Davies. 16. Ben Nevis, //'. U'esf. 



Found on the Continent, Norway. 



Obs. — This is another species which illustrates the slight 

 grounds there are for separating Cesia [Gj/mjiomifr'uim) from Mar- 

 supeJla. i)r, Spruce has found immature perianths in the speci- 

 mens he has examined, Dr. Carrington and I have only been able 

 to find fertile stems with the innermost bracts free to the base, 

 from the outer ones, and no perfect tubular perianths ; unfortu- 

 nately only little good material has yet been met with, and a 

 further study of the species, when found in good fruit, may settle 

 the question. Dr. Spruce very wisely says, " Tlie fact is, the cha- 

 racter relied on for the separation of Gymiwmilr'unii from MavHupdla 

 is a purely artificial one, like that of G//iin/o>ifoiunm among mosses." 



Differs from C. conc'iiinata, C. ohiiim and C. corallioide-s by its 

 smaller size and darker colour, absence of the silvery glaucous 

 tinge, margin of leaves never scariose. 



From C. crcin/Iafa, G., which it resembles in size, by being- 

 less intricately entangled, of a darker colour, almost black, not 

 greenish-brown ; margin of leaves entire, not crenulate-dentate. 



Description of Plate CLXXIV. — Fig. 1. Plants natural 

 size. 2. Stem x 30 (nr. Ben Lawers, Dr. Black). 3. Portion 

 of male stem x 62 (C. & P. n. 76). 4. Leaves x 64 (nr. Ben 

 Lawers, Dr. Black). 5. Leaf x 24 (Ben Lawers, G. Davies). 

 6. Leaf x 31 (Ben Nevis, W. West). 7. Ditto x Qi (ditto). 

 8. Portion of leaf, near middle base x 290 (Ben Lawers, G. 

 Davies). 9. Ditto x 200, from near apex of leaf 10, Bract 

 x 31 (Ben Nevis, W. West). 11. Ditto x 64 (C. & P. n. 76). 

 12. Innermost bract, calyptra and capsule x 64 (ditto). 13-15. 



